Company lists · Data refreshed September 2026

Top 25 Structured cabling companies based in Germany

Name: Structured cabling companies based in Germany
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 22, 2026 120 companies tracked

RevenueBase identified 120 structured cabling companies headquartered in Germany as of September 2026 and tracks 528 professional contacts across them, including 185 with verified work emails. Berlin is the largest hub.

This list covers structured cabling companies headquartered in Germany, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 22, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 22, 2026 86% judged on-target in blind review

120Companies

528Contacts tracked

185Verified emails

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The 25 largest structured cabling companies based in Germany

Ranked by team size

Top 25 of 120 structured cabling companies based in Germany, ranked by team size, largest first. Data refreshed Sep 22, 2026. RevenueBase Smart Search rates how each company's information relates to structured cabling companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Rosenberger-Osi Gmbh & Co. OHG	Partial evidence	Augsburg, GermanyHQ checked Sep 22, 2026	501-1,000	125 contacts →
	Partial evidence “Since 1991, Rosenberger Optical Solutions & Infrastructure (Rosenberger OSI) has been a recognized expert for fiber-based connectivity, cabling solutions and infrastructure…” Source: RevenueBase Database · checked Sep 22, 2026
2	APK Group Germany	Indirect evidence	Wesel, GermanyHQ checked Sep 22, 2026	201-500	28 contacts →
	Indirect evidence “Wir sind eine Unternehmensgruppe welches sich auf Coax/LWL Gebäudeverkabelung, Service & Wartung, Infratechnik, Tiefbau, Kabel & Fernmeldebau sowie Kupfer und Glasfaserbau &…” Source: RevenueBase Database · checked Sep 22, 2026
3	Premium-Line Systems	Indirect evidence	Raubling, GermanyHQ checked Sep 22, 2026	201-500	16 contacts →
	Indirect evidence “Premium-Line Systems is a part of a global manufacturing group with more than 20 years of experience in the field of networking market.” Source: RevenueBase Database · checked Sep 22, 2026
4	RFC Radio-, Fernseh- UND Computertechnik Gmbh	Indirect evidence	Chemnitz, GermanyHQ checked Sep 22, 2026	201-500	16 contacts →
	Indirect evidence “Wir sind ein mittelständisches Unternehmen mit über 250 Mitarbeitern und bieten mit über 25-jähriger Erfahrung komplexe Dienstleistungen im Bereich der multimedialen…” Source: RevenueBase Database · checked Sep 22, 2026
5	Rico Gmbh & Co. KG	Indirect evidence	Kirchheim Unter Teck, GermanyHQ checked Sep 22, 2026	11-50	14 contacts →
	Indirect evidence “Projekte in Bürokomplexen, Chemie- und Industrieanlagen, Einkaufszentren, Flughäfen, Kraftwerken, Sportarenen und Tunneln zeigen die Leistungsfähigkeit des Unternehmens auf diesem…” Source: RevenueBase Database · checked Sep 22, 2026
6	Tekanet Gmbh Telekommunikationsservice	Indirect evidence	Aschaffenburg, GermanyHQ checked Sep 22, 2026	11-50	12 contacts →
	Indirect evidence “TeKaNet GmbH Telekommunikationsservice is a company based out of 25 Marienstraße, Aschaffenburg, Bavaria, Germany.” Source: RevenueBase Database · checked Sep 22, 2026
7	TDE	Partial evidence	Dortmund, GermanyHQ checked Sep 22, 2026	51-200	12 contacts →
	Partial evidence “For more than 30 years the tde - trans data elektronik GmbH, an internationally successful company, has specialised in the development and production of scalable cabling systems…” Source: RevenueBase Database · checked Sep 22, 2026
8	Schneider & Partner Computervernetzung Gmbh	Indirect evidence	Ahrensfelde, GermanyHQ checked Sep 22, 2026	1-10	12 contacts →
	Indirect evidence “Schneider & Partner Computervernetzung GmbH is a management consulting company based out of Dorfstraße 21A, Ahrensfelde, Germany.” Source: RevenueBase Database · checked Sep 22, 2026
9	Visco Gmbh	Indirect evidence	Jagstzell, GermanyHQ checked Sep 22, 2026	51-200	11 contacts →
	Indirect evidence “Breitbandnetze aus einer Hand - Europaweit.” Source: RevenueBase Database · checked Sep 22, 2026
10	Ib-It Datacenter Gmbh	Strong evidence	Bad Vilbel, GermanyHQ checked Sep 22, 2026	11-50	8 contacts →
	Strong evidence “IB-IT Datacenter GmbH Technical Service Provider for Datacenters - Structured Cabling - Rack & Stack - IBX Operations - Colocation Logistics - Colocation Management - 24/7 On-Site…” Source: RevenueBase Database · checked Sep 22, 2026
11	At&t Cabling Systems	Partial evidence	Cologne, GermanyHQ checked Sep 22, 2026	51-200	8 contacts →
	Partial evidence “AT & T Cabling Systems AT & T Cabling Systems provides complete and state-of-the-art LAN cabling solutions and components for all needs of enterprise customers.” Source: RevenueBase Database · checked Sep 22, 2026
12	IBS Commnet Service Gmbh	Indirect evidence	Neunkirchen-seelscheid, GermanyHQ checked Sep 22, 2026	1-10	7 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026
13	ELMAT	Indirect evidence	Overath, GermanyHQ checked Sep 22, 2026	11-50	6 contacts →
	Indirect evidence “Wann auch immer.” Source: RevenueBase Database · checked Sep 22, 2026
14	NLS Netzwerke Gmbh	Indirect evidence	Alling, GermanyHQ checked Sep 22, 2026	11-50	5 contacts →
	Indirect evidence “Your Value- Competent partner for consulting, planning, delivery and implementation of complete IT-solutions- Longtime experience of experts to Data Center with its multiple…” Source: RevenueBase Database · checked Sep 22, 2026
15	Sturhan Edv-Beratung UND Vertriebs Gmbh & Co. KG	Indirect evidence	Herford, GermanyHQ checked Sep 22, 2026	1-10	5 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026
16	ALL Fiber Netz Group Gmbh	Indirect evidence	Paderborn, GermanyHQ checked Sep 22, 2026	1-10	5 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026
17	Iv.Sys Gmbh	Indirect evidence	Unna, GermanyHQ checked Sep 22, 2026	11-50	4 contacts →
	Indirect evidence “iv.sys GmbH – Your Partner for High-Quality Network & Fiber Optic Infrastructure We create connections: as a wholesaler, developer, and service provider in the field of copper and…” Source: RevenueBase Database · checked Sep 22, 2026
18	Münchner Glasfaser-Technik Gmbh	Indirect evidence	Gilching, GermanyHQ checked Sep 22, 2026	11-50	4 contacts →
	Indirect evidence “Herzlich willkommen bei der Münchner Glasfaser-Technik GmbH!” Source: RevenueBase Database · checked Sep 22, 2026
19	Weicom Systemhaus Gmbh	Indirect evidence	Mainz, GermanyHQ checked Sep 22, 2026	1-10	3 contacts →
	Indirect evidence “Wir bieten unseren Kunden alles zum Thema Netzwerke aus einer Hand.” Source: RevenueBase Database · checked Sep 22, 2026
20	Interport Real Gmbh	Indirect evidence	München / Grasbrunn, GermanyHQ checked Sep 22, 2026	11-50	3 contacts →
	Indirect evidence “INTERPORT REAL GmbH, gegründet in 2002, ist ein inhabergeführtes Unternehmen mit Stammsitz in Grasbrunn bei München und Standorten in Berlin, Leipzig und Frankfurt.” Source: RevenueBase Database · checked Sep 22, 2026
21	Kopcom	Indirect evidence	Haltern Am See, GermanyHQ checked Sep 22, 2026	11-50	3 contacts →
	Indirect evidence “KOPCOM – Communication Services We provide your network with high application availability and uninterrupted connectivity to give your business a leading edge.” Source: RevenueBase Database · checked Sep 22, 2026
22	Lekonet Daten- UND Fernmeldetechnik Gmbh	Indirect evidence	Dresden, GermanyHQ checked Sep 22, 2026	11-50	3 contacts →
	Indirect evidence “Wir, die Firma Lekonet Daten- und Fernmeldetechnik GmbH sind Ansprechpartner, wenn es um die Planung, Installation und Dokumentation von Datennetzen geht.” Source: RevenueBase Database · checked Sep 22, 2026
23	Ib-It Cabling Gmbh	Partial evidence	Bad Vilbel, GermanyHQ checked Sep 22, 2026	11-50	3 contacts →
	Partial evidence “IB-IT Cabling is a passionate team of highly skilled IT professionals providing IT Services since 1991.” Source: RevenueBase Database · checked Sep 22, 2026
24	Loock Fernmeldeanlagen Vertriebs Gmbh Service FÜR Telekommunikationssysteme	Indirect evidence	Castrop-rauxel, GermanyHQ checked Sep 22, 2026	11-50	3 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026
25	Drago Elektroinstallations Gmbh	Indirect evidence	Gummersbach, GermanyHQ checked Sep 22, 2026	1-10	3 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 22, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: structured cabling companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names structured cabling companies.
Partial evidence: Its own public description names part of structured cabling companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name structured cabling companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 120 structured cabling companies based in Germany

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Structured cabling companies based in Germany at a glance

As of Sep 22, 2026

35.0%Verified-email coverage

4.4Average contacts per company

11-50Median size (employees)

4.2%Largest-city concentration · Berlin

Sep 22, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

Email recency for this list is measured worldwide rather than for Germany, so it is reported there. Company counts and contact totals on this page are exact for Germany, over 120 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among structured cabling companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Germany whose own description of what they do matches “structured cabling companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names structured cabling companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among structured cabling companies, and records with no verified work email. Companies headquartered outside Germany are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 185 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 22, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names structured cabling companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many structured cabling companies are there based in Germany?

RevenueBase identified 120 structured cabling companies headquartered in Germany as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Rosenberger-Osi Gmbh & Co. OHG, headquartered in Augsburg, tops this list with the largest team on record.

Which city has the most structured cabling companies?

Berlin leads with 5 headquartered companies, followed by Hamburg (5) and Dresden (3).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 185 verified decision-maker contacts tracked across these 120 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 22, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.